Braiding-machine.



No. 682,887. Pacntadv Sept. I7, |901.

C SCHRMANN BHAIDING MACHINE.

(Application led June 25, 1900.)

2 Sheets-.Shut I.

(No Model.)

No. 682,887. Patented Sept. I7, |90I.

c. scHnmANN.

BBAIDING MACHINE.

, (Application Bled June` 25, 1900.) (No Model.) 2 Sheets-Sheet 2.

Mewea Wye/Z507' UNITED' l STATEs PATENT u CFF-ica."

CARL scHRMANN, oF'DUssELDoRF, GERMANY.

BRAIDING- MACHINE.

SPECIFICATION forming part of Letters Patent No. 682,887, dated September 17, 1901.

Application tiled June 25, 1900.

To all whom t may concern.:

Be it known that I, CARL SCHRMANN, engineer by diploma, a subject of the German Emperor, residing at Dusseldorf, inthe German Empire, have invented certain new and useful Improvements in Braiding-Machines, of which the following is a specification.

This invention relates to braiding-machines with two systems of threads, of which one turns in a circle while the other moves in radial slots. The machines of this kind heretofore constructed have the great disadvantage that the bobbins of the two systems of threads are on the cover of the machine, whereby the number of bobbins is much limited. Attempts have been made to obviate this disadvantage 4by replacing the bobbins running in the radial slots by threadguides and arranging the corresponding bobbins underneath the machine. This arrangement, however, presents the great disadvantage that a relative motion of the thread takes place in the thread-guides, and therefore the bobbins arranged beneath the machine must be constructed for a variable tension of the thread. They must be provided with thread-tensioning weights or the like.

All the faults of the braiding-machines with two systems of threads heretofore in use are obviated according to the present invention by replacing the circulating bobbins, which keep at a constant distance from the axis of rotation of the machine, by threadguides and arranging the corresponding bobbins within the machine. By this means it is possible to give any desired diameter to the bobbins within the machine without being obliged to enlarge the machine itself. Moreover, by reason of the thread-guides being always at the same distance from the axis of rotation of the machine there is no variation of the tension in the system of threads. Byreason of the arrangement within the machine of the bobbins belonging to Vthe circulating thread-guides it is possible to reduce the eccentricity of the cam-tracks from which the cover-bobbins are driven, these coverbobbins having to clear-the thread-guides, and thus the machine is reduced in size. If, however, the eccentricity of the camtracks is reduced, the angle of intersection of the cam-tracks will be more acute, and

serial No. 21,567. (No model.)

this circumstance necessitates a lengthening of the carriages in order that the latter can be safel y conducted through the cross- 5 5 ing of the cam-tracks. In the lengthening of the carriages,'however, therelative distance` apart of the cover-bobbins from each other is increased and therefore their nulnber must be reduced. In order to obviate this-that 6o is to say, in order to enable the distance apart of the bobbins to be smaller than the length of the carriages-the said carriages are allowed to engage one over the other at their ends stepwise.

The new braiding-machine is shown inthe accompanying drawings, in which- Figure l shows the machine in vertical section. Fig. 2 shows the same in plan. Figs.

3 and i show the carriages to be employed in 7o the machine.

and g/ are the two systems of bobbins, of which one, cc, turns in a circle, while the other, y, moves in radial slot-s. The motion of the bobbins y is eifected by means of camtracks (circles, ellipses, or the like) in which run carriages E E, which are connected'to the bobbins in such a manner that the bobbins must follow the prescribed path, while the necessary radial movement is permitted 8e by slots S in the cover A, for which purpose slide-blocks G run in these slots S, the part-s of the bobbins y being secured on the saidv blocks.

The bobbin system consists ot' thread- 85 guides I, which are secured on the cam-plate C and turn therewith in a circular track T. The bobbins D of the system of bobbins are secured within the machine on the camplate C. 9o

The systems of bobbins mand y run in opposite directions of rotation` and the magnitude of the difference of speed is dependent on the magnitude of the speed ratio of the toothed wheels K L M N. idly connected to the inner hollow sleeve II, and around this gear-wheel K run the gearwheels L and M planet fashion, whereby rotation of the gear-wheel Nis produced in the opposite direction to the cam-plate C.

Since the distance apart of the bobbins y from each other, and therefore also the maximum number of bobbins, is determined by the length of the carriages E E2, the car- IOO The gear-wheel K is rigriages must be made fairly long on account of the iat cam-crossing R. Thus the number of bobbins would be small if it were not possible to keep the distance apart of the bobbins smaller than the length of the carriages. This is rendered possible according to the present invention by formingthe carriages E' substantially in the shape of an inverted T and the carriages E2 substantially T- shaped, as shown in Figs. 3 and 4, so that they overlap each other in the cam-crossings.

The slide-blocksG of the bobbins y are preferably made in two parts to enable them to be more easily changed, and the camtracks C are provided in their bottoms at one or more places with openings U, which permit the convenient removal of the carriages E from beneath after the screws F have been slackened. Since the Whole Weight of the machine is taken by the ring V, a ball-bearing W is introduced at this place to reduce the consumption of power.

Having fully described my invention, what ing system of bobbins for guiding them,`

formed. to overlap each other in the camcrossings, so as to lead the carriages securely through the lat crossings without requiring a larger distance between the bobbins.

In witness whereof I have hereunto set my hand in presence of two witnesses.

CARL SCHURMANN. NVitnesses:

WILLIAM EssENWEIN, ERNEST ANDR. 

